Freezing apparatus



Aug. s, 1930. 'i E. KOH 1,772,424

`FREEZ'ING APPARATUS ATTORNEY,

Aug- 5, 1930- v E. D. Kol-IR I 1,772,424

Y FREEZING APPARATUS l Filed `April l, 1930 3 Sheets-Sheet 2 INVEN TOR. g

M ATTORNEY.

y Aug. s, 1930. E, D .KHR 1:17:2424

FREEZING APPARATUS Filed April 1, 1930 s shuts-simi a Patented 5, 1930 Y .i c ,i I

NETE @Starts narrar vo'rrlxc'r; f ,-ELVTGZVD KOHR, OEYQRK; PEY-JVAA i *j i rREEzING APPARATUS j application sieri" Apriii, 1930.v seri-erna @02792.A

Thisinventionrrelates toafreezing apparawith therefrigerant container andingreditus, and has for its primary objectto proent container removed. j 1 vide',- inl a manner *as `hereinafter set forth, Figure' wis a section taken on the line-#l an apparatus for producing ice cream, frozen of Figure l. 1 Y v 5 custard and the like in a continuous opera- Fig'ulrel is afdetailed View/of thescraping tion. i element. i Y 1 Y v A further object ofv the invention isV to f `Referring. to the drawings detail,thel provide a 'freezing apparatus for the purpose numeral 1 designates al refrigerant container aforesaid, in which the ingredients to be Whichis preferably of cylindrical construe- 10 frozen are fed into one end of acylinder tionwith the bottom thereof slopingrear- 60 rotatably mounted withina refrigerant conwardly and provided with a drain plugl tainer,and in which the frozen product is disadjacent the rearward end thereof,` The' con'- charged from the opposite end of the cylin tainer' lisvprovided with asuitable hopper der.` j n. c y j j yin' order that a refrigerant,sueh as crushed 15` A further object' ofthe invention isjto proyice,`may.be readilylintroduced thereinto. yEX- 65 vide a .freezing apparatus ofthe character tendinrgthroughithe forward end tofthe' conaforesaicl inf which novel means are employed tainer l is a rotatable sleeve 5', theouter end for agitating the contents of the cylinder and ofwhichvisprovidedwithaclutclr 6, byfmeans foi-working the same toward the discharge vof whichwthe `sleeve 5 Vmay be `clutched .to ,a

20, en@ Qf'thecylinder. j j hollow `drive shaft? to'rotate therewith; j Eir- 70 kA further object ofthe invention is to pro tending throughv the-rearward en d `8=Yofthe vide a freezing apparatus ofthe character container l4 isi/ay hollow sleeve 9which is aforesaid which is particularly designed to rotatable relativetothev container.' 1

prevent waste, and, in which lthe rotatable :Formed integrally with'the sleevej-fat the cylinder is free from anystructure arranged innerend of the latter, is the forwardend "75 concentrically thereto and extending length- 1() o f al cylindrical container lylfornthe in-k wise thereof in order to remove any tendency grjedients' to be frozen. The rearward endl 12 ofthe frozen product to-collect atthe actual of the containerl 11 has the hollow sleeve ,-9 center ofthe cylinder; v extending c therethrough andyise secured `to v With the fforegoingand otherobjects `in suchsleeve to rotatel therewith. 4 j j 80 View, the inventionconsistslof the novelcon- Extending through -tliedrivef shaft and struction, combination and arrangement of sleeve'is astationary hollowsupplypipe 1&3

parts as hereinafter more lparticularly dewhich projects intoithe container 1177 and scribechan'd as illustrated in the accompanyvthrough which the ingredients to be frozen ing drawings wherein islshownj'an embodimay` be passed into the container."l Keyed `85 ment of the invention, but itis to be underto the kprojecting inner end'portiony .of the stood' that the description and drawings are pipejlB isf the hub 14 of diskv l5 whichis to be taken as illustrative and that the invenconcentrieally arranged the container tionisintended tobe'limited only'by the scope 1l and the diameter of-which is-y slightlyless eo of; the claimsher'eunto appended. 4 thanthe inner diameter of the container" 1.1. 90

' In the accompanylngrdrawings in which 'Ehe inner end ofthe sleeve 9,4pr'ojects from like numerals ,are employed to .designatelike the inner face ofthe rearward' @Ddr2 ofthe Part? lhlbughmt th? Several- VlWVSZ-A-y container .11, and j disposed withinsuch Figure l is a vertical section of afreezifng projecting inner end of the sleeve; 9 is a ydisapparatusin accordance with this invention. charge pipe' i6 which is rotatablewith re- Figure 2 is a section taken on the line 2'-2 spect to thesleeve 9; The discharge pipe 16 of liigure 1 is formed with anfexternally threaded,I re- Figure 3 1s a sectionlta-ken on the line3-3 ducedr inner end portion L7 which projects of Figure l. fr'om'thegi-n-ner end of the sleeve 9 and which V,ligu'rei'f is atopplaxijofgtlieiapparatus is,ithrewle-olI -intvo a, centrally ldisposed collar 100 18 on a disk 19. Connecting the disks 15 and 19 are a plurality of combined agitating and tie rods 2O which are eccentrically dis- 4face' of the disk 19 is a recess 26 which is arranged at a greater distance from the ver- 1tical, longitudinal center of the container 11 than the recess 24. The recesses 24 and 26 areof materially greater width than the recess 22. Carried by the disks 15, 21 and 19 is aflscraperelement r28. The element 28 in- 'cludes' a blade 30 iixedly secured to a holder `31, the blade 30 and holder 31 extending through the recesses 22, 24 and 26 in the disks 15, 21 and' 19 respectively. The holder 31 is'pivotally connected with eachof the disks bymeans' of a bracket 32, one end of which is ysecured to the holder 31, and the other end of which is mounted on a pivot ypin 33 l projecting from a disk. Adjacent the pin 33 onbeach disk is a lug 34, and interposed between the lug 34 and bracket 32 is a coiled "spring 35. Owing to the relative arrangement of the recesses 22, 24 and 26, the blade 30 is 'disposed at an outwardand downward v'inclination with respect' to the axis of the container 11; The outer longitudinal edge of the blade'30- projects beyondthe peripheries `of thevdisks and is lbevelled as indicated at 36 tov provide a relatively sharp edge 37. In 'order thatthe edge 37may have continuous contact with the inner face of the container y*11, the blade 30 ygradually increasesin width from both ends thereof toward the center.

The edge 37 is normally maintained in contact with the inner face of the container 11 -by means ofthe springs bearing against the brackets y32.y y Secured to the outer vface of the disk 19,

lin spacedY relation to the discharge pipe 16 is a curvedcollector 44, one end of which extends tothe peripheral face of the disk 19 adjacent the recess 26. The rearward edge of the collector 44 is arranged in proximityto lthe inner face of the rearward end 12 of the container 11. f Between the collar 18 and the rearward end 12 of the container 11, the discharge pipe 16 is formed with an oppositely f disposed pair of circumferentially extending yrecesses 43 and 45' which are off center with respect to the vertical plane of the discharge pipe. A circumferentially extending recess i 46 lof substantially 180 is formed in 'the periphery of the sleeve 9, the recess 46 being lwithin the rotating container 11.

brought into registry with each of the recesses 43 and 45 once during each revolution of the sleeve 9.

Projecting from the inner face of the end 12 of the container 11 is an eccentrically disposed pin 47, the path of travel of which, during the rotation of the container, is in circumferential relation to the major portion of the collector 44, and crosses the end portion of the collector which extends to the peripheral face of the disk 19. The extended ,end portion of the collector is pro vided with a hinged gate 48 which is formed at its swinging edge with a bevelled face 49.

The gate 48 is normally maintained with its bevelled face 49 in contact with a bevelled seat 50 on the collector 44, by means of a leaf springy 51. Thev gate 48 is disposed within the path of travel of the pin 47.

In thel operation of my improved freezing" apparatus, the refrigerant container 1 and supplyv pipe 13 remain stationary, 'and the container 11 and sleeves 5 and 9 are rotated. The ingredients to be frozen are constantly fed to the interior of the container 11 through" the supply pipe 13 and'such ingredients are constantly agitated by the rods 2O disposed Owing to the angular disposition of the scraper ele- Ament 28, the contents of the container 11 are constantly worked around the peripheral faces of theV disks 21 and 19, and through the recesses 24 and 26Y toward the rearward end of the container 11. Any frozen product adhering to the inner face of the container 11 will becut therefrom by the g edge 37 yof the blade- 30.

TheY frozen product forced past the disk 19 willrbe maintained in proximity to the innerend of the sleeve 9 by the collector 44, and when the recess 46 is brought into registry with the recesses 43 and 45, the

frozen productrwill be forced through the latter into the discharge pipe 16. Owing to the d iametrically opposite disposition of the recesses 43and 45, and to the length of the recess 46, the latter will -be in registry with one of the former at all times whereby the frozen product will be'forced into the discharge pipe '16 in a continuous stream. Any tendency of thefrozen product to congeal above the inner end of theV sleeve 9 is eliminated bythe pin 47 which continually revolves around the major portion of the collector 44, passing through the gate 48 during each revolution. As soon as the pin clears the gate, the latter is automatically closed by the action of the spring 51 to prevent any of the frozen product from passing through It is to be noted that owing to the absence of any structure extending lengthwise within the container 11 and arranged concentrically thereto, there is no possibility of a llO n agitator and tie rods connecting the disks together, and a scraper blade carried by the 4' disks and extending at an inclination to the axis of the ingredient container for constantly Working the ingredients toward kthe rearward end thereof, said combinedagita-y tor and tie rods being arrangedeccentrically of the ingredient container and extending at inclinations to the axis thereof.l Y

2. A freezing apparatus comprising, a stationary refrigerant container, a rotatable ingredient container within the refrigerant con-- tainer, means for delivering ingredients to the ingredient container at the forward end thereof, means for conducting the ingredients Y from the rearward end ofthe ingredient container, a plurality of disks within the ingredient container, a plurality of combined agitator and tie rods connecting the disks together, and a scraper blade carried by the disks and extending at an inclination to the axis of the ingredient container for con'- z stantly working the ingredients toward the rearward end thereof, said blade having an arcuate cutting edge in continuous contacting relation with the inner face of the ingredient container.

' 3. A freezing apparatuscomprising, a stationary refrigerant container, a rotatable ingradient container within the refrigerant container, means for delivering ingredients to the ingredient container at the forward end thereof, means for conducting the ingredients from the rearward end of the ingredient container, a plurality of disks withinthe ingredient container, a plurality of combined agitator and tie rods connecting the disks to! gether, and a scraper blade carried by the disks and extending' at an inclination to the axis of the ingredient container for constantly working the ingredients toward the rearward end thereof.

e. A freezing apparatus comprising, a stationary refrigerant container, a rotatable ingredient container within the refrigerant container, a supply pipe extending into the ingredient container at the forward end therel of, a discharge pipe leading from the rearward end of the ingredient container, a disk carried by each of said pipes, said disks being concentrically arranged within the ingredient container and having their peripheral faces spaced from the peripheral vwall of such container, au plurality of combined agitator andtie rods connecting said disks together, said rodsbeing arranged eccentrically ofthe ingredient container, a

disk lsupported by said rods intermediate the first named'disks, and a scraper blade carried by the dis rs and extending at an inclinationto the axis of the ingredient' container.

Y `5. A freezingapparatuscomprising,a stationary' refrigerant container, a rotatable ingredientv container withinY ythe refrigerant container, Ya supply pipe extending' into` the ingredient container at the forward end thereof, a discharge pipe leading from kthe rearward end of the ingredientcontainer, a' disk carried by each ofV said pipes, said disks being concentrically arranged within the ingredient container and having their peripheral faces spacedfrorn the peripheral wall of such container, a plurality of combined agitator and tiel rods 4connecting said disks together, said rods being 'arranged eccentrically of the ingredient container, a disk supported by said rods intermediate the first named disks, each of"f said ydisks vhaving its peripheral n face formed with a recess, the recesses in the inter'- mediate and rearward disks being of greater width thanthe recess in the forward disk, 'said recesses being arrangedv out of alignment longitudinally of Vthe ingredientcontaineiyand a scraper blade extending through said recesses and' having an edge facey in continuous contact with the inner face ofthe ingredientcontainer.' i

6. A freezing apparatus comprising, a stationary refrigerantcontainer,' a rotatable ingredient container within the refrigerant container, a stationary supply pipe extending into the ingredient container'at the for'- ward end thereof, adisk carried by the supply pipe and disposed'within the ingredient container,l a rotatable lsleeve extending into the ingredient container at the rearward end thereof, a stationary' discharge pipe projectving' intojthe inner end ofv said sleeve, a disk` carried by said discharge pipe, said'y discharge pipe having' a" pair ofspaced, circumferentially extending recesses',L said sleeve having `a circumferentially extending recess for' reg istry withthe recesses in the discharge pipe,

a curved collector element passing beneath said sl'e'eve, a plurality of combined agitator and tie rods connecting said disks and extending at inclinations to the axis of the ingredient container, anda scraper blade car iso stationary discharge pipe projecting into the inner end of said sleeve, a disk carried by said discharge pipe, said discharge pipe having a pair of spaced, circumferentially extending recesses, said sleeve having a circumferentially extending recess for registry with the recesses in the discharge pipe, a curved collector element passing beneath said sleeve, a plurality of combined agitator and tie rods H, connect-ing said disks and yextending at inclinations to the axis of the ingredient coni tainer, anda scraper'blade carried by said disks, said scraper blade having an arcuate cutting edge in continuous Contact with the 1;, inner face of the ingredient container and extending atan inclination to the axis there-k of.

8. A freezing apparatus comprising, a stationary refrigerant container, a rotatable inw, gredient container, within the refrigerant container, a stationary supply pipe extending into the ingredient container at the forward end thereof, a disk 'carried by the supply pipe and disposed within the ingredient container, a rotatable sleeve extending into the ingredient container at the rearward end thereof, a stationary discharge pipe projecting into the inner end of said sleeve, a disk carried by said discharge pipe, said discharge am. pipe having a .pair` of spaced, circumferentially extending recesses, said sleeve having a circumferentially extending recess for regstry withthe recesses in the discharge pipe, a curved collector projecting from the rear face of the disk carried by said sleeve, said collector passingbeneath the sleeve and having an end portion extending to the peripheral face of the disk on the sleeve, a spring actuated, normally closed gate in the extend a cd end portion of the collector, a pin projecting inwardly from the rearward end of the ingredient container, said pin revolving around a major portion of the collector and passing through saidgate at each revolution, f, a plurality of combined agitator and tie rods connecting said disks and extending at inclinations to the axis of the ingredient container, and a scraper blade carried by said disks. 5,1; Intestimony whereof, I affix my signature hereto.

ELTON D. KOHR. C 

